TCP Vegas uses variations in measured throughput as an indication of congestion, in addition to packet loss. It also uses finer timer granularity compared to its predecessors. Otherwise its heritage is TCP Reno
Linux implements the Vegas algorithm as one option in its modular TCP congestion control framework. An issue in connection with Delayed Acknowledgements
by D.X. Wei (see references), and was apparently fixed
in what will become Linux 2.6.20.
A proposed OpenSolaris project
foresees the implementation of TCP Vegas and several other congestion control algorithms for
An initial implementation of TCP Vegas for
in February 2010 along with other interesting tools.
The TCP Vegas Implementation for Linux
Web page has a few hints on how to tune the various parameters of TCP Vegas.
is a hybrid between Vegas
and Reno TCP.
implements a "low-priority" service that defers to other TCPs when there is congestion.
- TCP Vegas: End to End Congestion Avoidance on a Global Internet, L. S. Brakmo and L. L. Peterson, Oct. 1995 (PDF)
- Vegas Home Page, http://www.cs.arizona.edu/projects/protocols/
- A TCP Vegas Implementation for Linux, N. Caldwell and B. Bak, Web page 1999 - 2004, http://neal.nu/uw/linux-vegas/
- Analysis and Comparison of TCP Reno and Vegas, J. Mo, R.J. La, V. Anantharam, J. Walrand, July 1998, http://netlab.caltech.edu/FAST/references/Mo_comparisonwithTCPReno.pdf
- Known problems in TCP algorithms in Linux 22.214.171.124, D.X. Wei, June 2006, http://www.cs.caltech.edu/%7Eweixl/technical/ns2linux/known_linux/index.html
- 28 Nov 2006 - 07 Feb 2011